Valve



Dec. 6, 1927;

G. J. 'BELKNAP VALVE .Filed Feb. 17 1927 INVENTOR 9 8 BM ATTORNEY.

l fatented Dec. 6, 1927.

PATENT OFFICE.

GEORGE J. BELKNAP, 0F BRIDGEPORT, CONNECTICUT.

VALVE.

Application filed February 17, 1927. Serial No. 168,915.

'llhis invention relates to an improvement in. valves and particularly to a specially con structed disc holder tttlfll'll'tltl to cilect a joint suiliciently tight to prevent leakage of fluids such as oils, air, steam, water, &c., when the dii c is seated.

Referring to the accompanying drawings wherein the same niunerals oi reference indicate like parts throughout the several views;

Figure 1 represents an elevation of disc holder and disc assembled.

li igure 2 a central sectional. view. of the disc holder, disc anc sealing ring in an incomplete state of construction.

i gin-e 3 is an elevation of the disc.

l igure l is a broken sectional view of the disc holder, sectional View of the sealing ring, itull view of the disc and retaining nut, and broken sectional view of a valve seat, and

liigure 5 is a plan view of the sealing ring.

The disc holder comprises the head 1, stem 2 with its threaded end 3 adapted to receive the nut l. The underside of the holder is rece "*d to receive the disc 5 formed of noninctallic and nonporous material impregnalolc to fluids, gas, air, water or oils. The disc has l flange 6 adapted to be seated the toe against the bottom oi the recess, and the central opening 6 adapted to embrace the stem 2 ol? the holder, Figure 2. The disc also has the taper face 7 for the valve seat 5"), l igurc i.

ll a ring oil load or other soft compressibe material. surrrnnuling the disc and run d-nrlying the flange 6. When the disc 5 and the ring 9 are in the position shown in Figure 2, the assembled disc is rotated and a suitable bnrnishing tool is applied under pressure against the skirt or outer wall 10 of the recessed holder to compress the ring 9 firmly against the body and flange of the disc as shown in Figure 4. As the burnishing force being applied it will force out any surplus metal as fast as the skirt 1O approaches the body of the disc and leave the compact remainder to form a perfect seal within the encircling compass oi the outer wall 11.0.

The tendency of a valve to leak fluid is when the valve seated. As it cannot pass by a valve when properly seated it will force its way through the threaded nut and work through the several joints of the valve and escape, and the amount escaping will be in proportion to the pressure of the fluid.

The original. purpose of the flange 6 and the skirt 10 was to form a joint to retain the disc 5 within the holder 1, but as this arrangement would not prevent leakage through the threaded nut, and between the stem 2 and the disc, and thence through this joint, the soft yielding metal ring 9 was in- :rerted which forms a perfect seal against the escape oil? all fluic A valve, constructed as shown, can be made oi? any desired size. it is, however, specially designed for very small. valves, used in oil sampling on all electrical apparatus or simi- 7 lar oil storage tanks.

Having thus described my invention what I claim is 1. A valve construction of the character described, comprising a recessed metal 77 holder, a non-metallic and non-porous disc having a flange adapted to seat against the bottom oi: the recess, a ring of compressible material. embracing the disc within the recess and underlying the disc flange and pressed by the walls ot the recess into tight engage ment with the same.

A 'alvc (JOllhtlLlcllt'Jll of the character described, comprising a recessed. metal holder having a stem projecting therefrom, a non-metallic and nonporous disc having a central opening adapted to embrace the stem and a flange adapted to seat against the bottom of the recess, a ring of compressible material embracing the disc and within the recess and underlying the disc flange and pressed by the walls oi? the recess into tight engagement with the same.

In testimony whereof I ailix my signature.

GEORGE J. BELKNAP, 

